A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

John was drowned by he was not wet. How?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Why do you find that most of the buildings are deprived of the 13th floor?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Which is the smallest number that you can write using all the vowels exactly once?